Technical Specifications
7-6
EM3 AEM User’s Guide
Guidance and manufacturer’s declaration – electromagnetic immunity (EN 60601-1-2)
The Encision Model EM3 series AEM and accessories are intended for use in the electromagnetic environment
specified below. The customer or user of the equipment should assure that it is used in such an environment.
Immunity test
IEC 60601 test
level
Compliance
level
Electromagnetic environment –
guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
15kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 Vrms
150kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
Portable and mobile RF
communications
Equipment should be used no closer to
any part of the Model EM3 series AEM
Monitor and accessories, including
cables, than the recommended
separation distance calculated from
the equation applicable to the
frequency of the transmitter.
Recommended separation distance
_
d = 1.2
√
P 80 MHz to 800 MHz
_
d = 1.2
√
P 80 MHz to 800 MHz
_
d = 2.3
√
P 800 MHz to 2.5 GHz
Where P is the maximum output power
rating of the transmitter in watts (W)
according to the transmitter
manufacturer and d is the
recommended separation distance in
meters (m).
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey
a
, should
be less than the compliance level in
each frequency range.
b
Interference may occur in the vicinity
of equipment marked with the following
symbol.
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephone and land
mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically
with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site
survey should be considered. If the measured field strength in the location in which the AEM Monitor and
accessories is used exceeds the applicable RF compliance level above, the equipment should be observed to
verify to normal operation. If abnormal performance is observed, additional measures may be necessary, such
as reorienting or relocating the equipment.
b
Over the frequency range 150 kHz to 80 MHz, the field strengths should be less than 3 Vm.